/** * ServiceInfo.java * * * Created: Fri May 4 22:38:57 2001 * * @author * @version */ import java.io.*; import java.text.*; import java.util.*; import javax.servlet.*; import javax.servlet.http.*; import net.jini.core.lookup.ServiceItem; import servicefinder.ServiceFinder; public class ServiceInfo extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println(""); out.println(""); out.println("" + "Jini Service Information" + ""); out.println(""); out.println(""); HttpSession session = request.getSession(); ServiceFinder finder = (ServiceFinder) session.getAttribute("ServiceFinder"); if (finder == null) { out.println("Can't find service finder"); out.println(" "); } String serviceName = request.getParameter("servicename"); if (serviceName == null) { out.println("No service parameter supplied"); out.println(" "); } ServiceItem[] services = null; try { services = finder.getServices(); } catch(java.rmi.RemoteException e) { out.println("
" + e.toString() + "
"); out.println("\n"); return; } ServiceItem serviceItem = null; for (int n = 0; n < services.length; n++) { ServiceItem item = services[n]; if (item.service == null) { continue; } if (item.service.getClass().getName().equals(serviceName)) { serviceItem = item; break; } } if (serviceItem == null) { out.println("Can't find service " + serviceName); out.println("\n"); return; } printServiceInfo(out, serviceItem); out.println(""); out.println(""); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { doGet(request, response); } void printServiceInfo(PrintWriter out, ServiceItem item) { String name = item.service.getClass().getName(); out.println("

Information about service " + name + "

"); Object service = item.service; Class serviceClass = service.getClass(); Class[] interfaces = serviceClass.getInterfaces(); out.println("

Interfaces

"); out.println("

This lists the interfaces that " + name + " implements. Sublists are interfaces that the interface " + "itself implements.

"); out.println("

Select an interface to see its definition

"); printInterfaces(out, interfaces); } /** * This needs to be called recursively as we walk * up the tree of interface definitions */ void printInterfaces(PrintWriter out, Class[] interfaces) { if (interfaces.length == 0) { return; } out.println(""); } }// ServiceInfo